Being an HR Manager, and having over 20 years of hiring experience, my advice is to simply say you were absent for whatever time period as you were taking care of some personal matters that required your full attention, that those matters have now been fully resolved, and you can now devote your energies to this new opportunity that you're quite interested in. Regrettably I've worked for companies that, behind closed doors, use information about past illnesses or injuries as the reason to not hire out of fear of future absenteeism and/or fear of future health insurance premium increases. Illegal and sad, but true. I don't believe in not being truthful, but your personal health information is not your current or future employers' business. My best wishes for your next career step.